Product Name: USB Cup Cooler Description: 1) Plug this USB cooler directly to the USB port of your computer, no driver and other power source are needed2) Simply place your drink on top of the pad and choose working method (cool or warm), everything will be OK soon3) Plug it to a USB port without any transformer, and the cold plate quickly feels cold4) Cold plate temperature: 10~15¡ãC 5) Simply place anything on the cold plate and allow it variously to cool down or to stay cool 6) Cold plate diameter: 65mm 7) Product size: 14 x 9 x 3.7cm8) Color available: white 9) Material: ABS, aluminum, steel 10) Operated by 5V USB power